E Serise Large Axial Flow Pump
An overhung typ is recommended when the pump diameter is more than 1000mm with high temprature medium. And it is necessary to install a reducer if the pump speed is low. We recommend this suspension installation + universal candan joint, which is not necessary to set expansion joints in the pipeline, because the weight of the pump is supported by the pipeline.
1.Introduction of ZW Axial Flow Evaporation Circulation Pump
ZW series axial flow pumps include ZWX, ZWXII and ZWQE、ZWQF models are wildly used in the evaporation crystallization plants and their design standards are based on GB/T 13008-2013.
ZW type axial flow evaporation circulation pump is widely used in large flow, low head occasions, as a transport or forced circulation pump, such as MVR water treatment、multi effect evaporator plant、 vacuum production of salt、 alumina、glauber、 alkali、sugar、 desalination and other fields.
This series pump has 8 patented technologies, φ1000~1800mm large is awarded as a provincial scientific and technological achievement and China Machinery Industry Science and Technology Progress Award, it has been applied in a large number of engineering projects at home and abroad, capturing over 90% of the domestic market.
Technical Data:
- DN: 250mm-1700mm
- Flow：Q=250～45000（m³/h）
- Head：H=8～5 (m)
- Speed：180～1450rpm
- Fluid s.g.：≤1.5
- Fluid temperature：T=0～180℃
- Fluid viscosity：≤600(mm2/s)
Applications:
- Salt-making force circulation pump
- Sodium sulfate force circulation pump
- Aluminum oxide force circulation pump
- Sugar-making force circulation pump
- Chlorine alkali force circulation pump
- MVR water treatment force circulation pump
Main Features:
- The impeller is high hydraulic efficiency type and is designed to be applicable to the requirements of evaporation system, it is able to adapt the fluctuation of evaporator loading,therefore reduces the energy consumption and increases the output.
- Adopting the adjustable impeller to fit different applications.
- Butt welding and thermal compensation reduces the investment cost.
- Low pump speed and low linear velocity reduces the damage of crystals.
- Pipe hung arrangement solved the stress compensation caused by heat expansion, no need of pump baseplate and expansion joint.
- Slight vibration,low noise,smooth operation,high efficiency and energy-saving.
Structure Features:
- Optimized curved tube runner design with good hydraulic performance.
- Welding or elbow structure, low operating and maintenance costs.
- Large machine seal cavity for easy machine sealing and daily maintenance.
Adjustable blades for different working conditions. Slow speed design technology, no damage to crystals. Cantilever support, quick dis-assembly.
High-strength shaft after special heat treatment, flexible choice of integral shaft or butt weld shaft, advanced cantilever ratio design, stable and reliable.
Adjusted short joint of the welded structure, no defects. Adjustable lugs to ensure efficient pump operation. After precision machining, the gap is even for reliable operating.
Suction flange is horizontal, discharge flange is vertical, flange can bear more pipe load. According to client’s requirments, flange standard can be GB, HG, DIN, ANSI.
The bearings are installed inside the main bearing box and integrated with the bearing seat. The bearings are lubricated with grease. The combination of tapered roller bearings and cylindrical roller bearings ensures the service life of the bearings.
Shaft seal can be packing seal and mechanical seal.
Seal of pump and auxiliary flush plan will be in accor- dance with API682 to ensure safe and reliable seal in different work condition.
Various Installation Methods
